Temperature compensated drive for a piezoelectric displacement generator

A solid-state image sensing device comprising:

• (a) a solid-state image sensor which receives image light incident thereon having means to provide an electrical image pickup signal corresponding to the image light;
• (b) piezoelectric element means, mechanically coupled to said image sensor, for receiving an externally applied AC drive voltage and for vibrating said image sensor in response to the AC drive voltage so as to cause said image sensor to periodically vibrate in conformity with relative positions of said image sensor and the image light, said piezoelectric element means having an electrostatic capacitance with a predetermined temperature coefficient;
• and
• (c) capacitor means, electrically connected in series with said piezoelectric element means and having an electrostatic capacitance with a temperature coefficient whose sign is opposite to that of the predetermined temperature coefficient, for properly changing the drive voltage to be applied to said piezoelectric element means when the electrostatic capacitance of said piezoelectric element means changes in accordance with a change in ambient temperature, thereby causing said piezoelectric element means to generate a periodic displacement so as to keep the periodic displacement constant independently of the change in ambient temperature.